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    • 2. 发明授权
    • Powder coating for packaging containers
    • 包装容器用粉末涂料
    • US06322900B1
    • 2001-11-27
    • US09464338
    • 1999-12-15
    • Leonidas Kiriazis
    • Leonidas Kiriazis
    • B32B2732
    • C08L75/04C08G2150/20C08L75/06C09D5/031C09D175/04Y10T428/31757Y10T428/31913
    • The present invention relates to a powder coating for application to packaging containers, 1) the powder coating comprising A) at least one thermoplastic, B) if desired, at least one thermoset, preferably an epoxy resin having an epoxy equivalent weight of from 400 to 3000, C) if desired, pigments, fillers, catalysts, typical powder coating additives such as degassing agents, levelling agents, free-radical scavengers and antioxidants, and 2) the powder coating having a particle-size distribution such that a) at least 90 percent by mass of the powder-coating particles have a size of between 1 and 120 &mgr;m, b) the maximum size of the powder-coating particles is ≦150 &mgr;m for at least 99 percent by mass of the particles, and c) the mean size of the powder-coating particles is between 1 and 60 &mgr;m, preferably from 1 to 30 &mgr;m.
    • 本发明涉及用于包装容器的粉末涂料,1)粉末涂料,其包含A)至少一种热塑性塑料,B)如果需要,至少一种热固性材料,优选环氧当量为400至3000的环氧树脂 ,C)如果需要,颜料,填料,催化剂,典型的粉末涂料添加剂如脱气剂,流平剂,自由基清除剂和抗氧化剂,以及2)粉末涂料的粒度分布,使得a)至少90% 粉末涂料颗粒的质量为1至120μm,b)至少99质量%的颗粒,粉末涂料颗粒的最大尺寸为<=150μm,和c)平均尺寸 粉末涂料颗粒为1至60μm,优选1至30μm。